Biology Test One

Question 1

What is the difference between light and electron microscopes and the way they produce images? What types of objects can be studied with a light microscope and an electron microscope(TEM and SEM)?

Answer 1

Light microscopes uses light to produce images whereas electron microscopes use electrons to produce an image.
Light microscopes can look at living and non living organisms. Whereas electron microscopes cannot look at living things, but they can make a 3D scan in the SEM and see details inside a dead organism with the TEM.

Question 2

Describe the difference between an earthworm’s anatomy and that of a human(heart,lungs,eyes,movement).

Answer 2

The earth worm has five hearts.
The earthworm has no lungs, so they breath through their skin.
The earthworm doesn’t have any eyes, but they use their light sensitive cells.
The earthworm’s muscles expand and contract when the move.

Question 3

How does a light microscope produce an image?

Answer 3

It allows light to pass through the specimen and use two lenses to form an image.

Question 4

How does an Electron Microscope produce an image?

Answer 4

They use beams of electrons.

Question 5

What type of objects can be studied with a SEM

Answer 5

3D

Question 6

What type of objects can be studied with a TEM?

Answer 6

Detailed cells.

Question 7

List 3 goals of science.

Answer 7

1. Investigate and understand the natural world.
2. Explain events in the natural world.
3. To use the explanations we have to make useful predictions.

Question 8

List 3 Characteristics of Living Things.

Answer 8

1. Living things reproduce.
2. Living things grow and develop.
3. Living things respond to their environment.

Question 9

What are two levels that are part of the Levels of organization? What are they called and what is studied in that level?

Answer 9

Biosphere: The part of earth that contains all ecosystems.
Biosphere

Organism: individual living thing.
Bison

Question 10

Study of living things.

Answer 10

Biology

Question 11

Proposed scientific explanation for a set of observations.

Answer 11

Hypothesis

Question 12

Life can arise from nonliving matter.

Answer 12

Spontaneous generation.

Question 13

Variable that is deliberately changed.

Answer 13

Manipulated variable

Question 14

Variable that is observed and changes in response to the manipulated variable.

Answer 14

Responding Variable

Question 15

Logical interpretation based on prior knowledge or experience.

Answer 15

Inference

Question 16

Combination of chemical reactions through which an organism builds up or breaks down materials.

Answer 16

Metabolism

Question 17

A well-tested explanation that unites a broad range of observations.

Answer 17

Theory

Question 18

Quantitative observation?

Answer 18

Expressed by numbers obtained by counting or measuring.

Question 19

Qualitative observation?

Answer 19

Descriptive characteristics.

Question 20

Did Redi believe in spontaneous generation?

Answer 20

Yes

Question 21

The information gathered from observations.,

Answer 21

Data

Question 22

What is a controlled experiment?

Answer 22

When a hypothesis is tested by an experiment, only one variable is changed at a time. All other variables should be kept unchanged or controlled.

Question 23

How do earthworm’s reproduce?

Answer 23

Sexual reproduction, one worm has one male and female part and the other worm and the worm with the parts stick together.

Question 24

What kingdom to earthworm’s belong to?

Answer 24

Animalia the phylum Annelida